Can't see any fonts except Bfont for text objects
A new font can be loaded by clicking on the folder icon in the Font panel.



Blender will open the directory configured in Preferences > File Paths by default. All font files located in the directory will be displayed. If you've installed fonts through the Install option, instead of Install for all users, they will not be located in C:\Windows\Fonts but C:\Users\[your username]\AppData\Local\Microsoft\Windows\Fonts instead.


Image source: Announcing Windows 10 Insider Preview Build 17704